California Water Data
This page is a portal to all kinds of information on the current and past state of water resources, both in California and around the country. Get real-time information on California water resources via a searchable Google map interface:
Real Time Streamflow Conditions:
Real-time streamflow data from automated equipment,
representing the most current hydrologic conditions.
Water Quality:
Data from automated field equipment representing the most current hydrologic water quality conditions.
USGS Data Mapper
Shows real time current California conditions including surface-water, groundwater, spring sites, atmospheric sites and more.
National Water Data
Information on water resources around the country, including Frequently Asked Questions.